单项选择题 YouarecreatingaWindowsCommunicationFoundation（WCF）servicethatimplementsthefollowingservicecontract.PublicInterfaceIOrderProcessingSubApproveOrder（ByValidAsInteger）Forinteractiveandself-pacedpreparationofexam70-513，tryourpracticeexams.Practiceexamsalsoincludeselfassessmentandreportingfeatures!EndInterfaceYouneedtoensurethatonlyuserswiththeManagerrolecancalltheApproveOrdermethod.Whatshouldyoudo？（）</servicecontract（）

单项选择题 YouarecreatingaWindowsCommunicationFoundation（WCF）servicethatacceptsmessagesfromclientswhentheyarestarted.Themessageisdefinedasfollows.[MessageContract]publicclassAgent{publicstringCodeName{get；set；}publicstringSecretHandshake{get；set；}}Youhavethefollowingrequirements："TheCodeNamepropertymustbesentincleartext.Theservicemustbeabletoverifythatthepropertyvaluewasnotchangedafterbeingsentbytheclient."TheSecretHandshakepropertymustnotbesentincleartextandmustbereadablebytheservice.Whatshouldyoudo？（）

单项选择题 YouarecreatingaWindowsCommunicationFoundation（WCF）servicetoprocessorders.Thedatacontractfortheorderisdefinedasfollows.[DataContract]publicclassOrder{ [DataMember]publicstringCardHolderName{get；set；[DataMember]publicstringCreditCardNumber{get；set；}}Youhavethefollowingrequirements： "EnablethetransmissionofthecontentsofOrderfromtheclientstotheservice."EnsurethatthecontentsofCreditCardNumberarenotsentacrossthenetworkincleartext."EnsurethatthecontentsofCreditCardNumberareaccessiblebytheservicetoprocesstheorder.Youneedtoimplementtheservicetomeettheserequirements.Whatshouldyoudo？（） Forinteractiveandself-pacedpreparationofexam70-513，tryourpracticeexams.Practiceexamsalsoincludeselfassessmentandreportingfeatures!